diff --git a/android/src/main/java/pt/tribeiro/flutter_plugin_pdf_viewer/FlutterPluginPdfViewerPlugin.java b/android/src/main/java/pt/tribeiro/flutter_plugin_pdf_viewer/FlutterPluginPdfViewerPlugin.java
index 27570865..0243e749 100644
--- a/android/src/main/java/pt/tribeiro/flutter_plugin_pdf_viewer/FlutterPluginPdfViewerPlugin.java
+++ b/android/src/main/java/pt/tribeiro/flutter_plugin_pdf_viewer/FlutterPluginPdfViewerPlugin.java
@@ -85,13 +85,14 @@ public void run() {
                                 if (pageResult == null) {
                                     Log.d(TAG, "Retrieving page failed.");
                                     result.notImplemented();
+                                } else {
+                                    mainThreadHandler.post(new Runnable() {
+                                        @Override
+                                        public void run() {
+                                            result.success(pageResult);
+                                        }
+                                    });
                                 }
-                                mainThreadHandler.post(new Runnable() {
-                                    @Override
-                                    public void run() {
-                                        result.success(pageResult);
-                                    }
-                                });
                                 break;
                             default:
                                 result.notImplemented();
@@ -200,7 +201,6 @@ private String getPage(String filePath, @Nullable Integer pageNumber) {
                 ret = createTempPreview(bitmap, filePath, pageNumber);
             } finally {
                 page.close();
-                renderer.close();
             }
             return ret;
         } catch (Exception ex) {